Catedral de Brasília by Oscar Niemeyer

The raw construction of the Cathedral was finished in 1960, with only the roof structure without the glassing.President Juscelino Kubitschek intended the cathedral to be paid and sustained by the state and open to all faiths, governments after that did not provide funding, and the building was turned over to the Catholic Church. The cathedral was officially opened on May 31, 1970.

In my opinion this Cathedral is after the Sagrada Família by Antony Gaudi, the most beautifulest modern sacred building.